yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] fireproof34:
Ptab7200 VS the PMID700

So it looks there might be 2 diffident Polaroid tabs out there. I think they are pretty much the same but i have noticed that the ptab has 4 gb internal storage and it seems the PMID700 has 2gb? (i have the ptab so im not sure about the PMID700) Also it seems the ptab has 2.3.1. and the PMID700 has 2.2? from what i have seen on line the PMID700 is from Manards. I got my ptab from kohl s. This is probably a pointless post but if any one has any other differences it would be nice to know what they are.

---------- Post added at 07:45 AM ---------- Previous post was at 07:27 AM ----------

Ok so i ran across this at slate droid and it appears this is the same CPU we are working with.

Hi, I just released an RK2918 tools package for the Wopad i7 in the other forum. It includes RK29 USB drivers for ALL windows Operating systems, Firmware Upgrade Tools (in ENGLISH!!), and Wendal's V.1 RK29 system.img / boot.img packaging tools version 1. I found version 1 much easier to use that is why I chose it.

Anyhow, i spent a lot of time making detailed instruction files for each tool and for driver installation so hopefully it is "noob" friendly . It is exactly what I would have liked to have had when I first started messing with RK29 stuff. So, hopefully it will help out some other folks.

Anyhow, it is in the first post of this thread:

http://www.slatedroid.com/topic/21947-wopad-2-firmware/page__gopid__236079#entry236079

I just had the bright idea that it would be useful for all you Teclast t760 folks as well as it works for all RK29 based devices!

Cheers,

Roman

http://topnotchtablets.com
[Android Q&A, Help & Troubleshooting] rozzops:
You are right about the pmid being 2gb internal but the pmid also uses 2.3.1. (I have the pmid700)

The issue with all the tools you mentioned is for some reason the unpacked .img files (after using AFPTool) all can not be opened in linux or windows. I have been successful in unpacking the update.img and pushing the system.img back to the tablet and mounting it. So i know the image is good but my windows and ubuntu machine can not mount it. I'm thinking its a different type of cramfs or some specialized format.

What i would like to do is move from cramfs to ext3 but that means i need to open the boot.img which i also can not do. Any help opening these unpacked images would be awesome. I believe this is what is currently holding us back from moving to an ext3 mounted system and ultimately rooting the tablet.
[Android Q&A, Help & Troubleshooting] fireproof34:
so we need to find a windows program that will allow us to mount the image?
[Android Q&A, Help & Troubleshooting] FadeFx:
Did u guys try doomlord's root tool v3 on this tablet? I was able to root my vizio vtab1008 using it (with adb files from android sdk (package in the thread i made about it, just check my threads) possibly you can use this instead of the modified system image.

----------------------------------------

tapatalked
[Android Q&A, Help & Troubleshooting] smarcin:
I also have a p700. Are there any other differences from the Kohl's tab besides the 2gb vs 4gb of internal memory? I'm no dev, but have run Android starting with running it on my WM Touch. We ran Android from the microsd. I have also hard that people can run ROMs from the sd on the Nook color. Is there any chance we could do that?

As an aside, I couldn't get near the Menards in the Twin Cities on Black Friday. I got mine today for $119. :( Still, it's not bad. Slower than my Evo 3d, though.

I'm up for testing. I have LINUX dual booting on my netbook. I can als handle the command line in LINUX, have successfuly rooted my Android phones and can use adb.

I'm going to look for a version of the market that works.
[Android Q&A, Help & Troubleshooting] chidave09:
Yes, or a program on any other OS (LINUX is best bet)

I was able to get rockchip USB drivers installed for it and I have the updater tool that will allow us to completely wipe internal memory (caution!) and it allows you to flash an update image or each partition separately. I will post instructions and required files when I get home from work.
[Android Q&A, Help & Troubleshooting] rozzops:
fireproof34:

Either Mount the image or allow us to view it and create a new image. It doesn't have to be a windows program. Linux would be fine as well. So far the only thing that seems to be able to view these images is the tablet itself.

FadeFx:

Yes, Since /system is a read only file system no one click tool is going to root this tablet.

smarcin:

The only true way of getting the andriod market to work is to be able to add the apk's to the /system/app folder and since /system is cramfs and is read only this can not be done until we find a way to modify the system.img and push it back to the tablet.

I would like to add that this isn't a simple root, i'm not going to say impossible but for some reason these tablets have images that linux and windows can not read. Once we get past that we can move from the read only cramfs system mount and push it to ext3. We can not do this until we can successfully modify the boot.img which still can not be opened. I dont want to sound like a broken record but the images can not be opened, If you find one that will open it/mount it that will be a breakthrough.

So far it looks like we have 3 options (2 of which we are stuck at)

1. Modify the existing cramfs system.img. If we find a way to modify this image we can push the proper tool to "root" this tablet and be able to add files to the /system/app folder. The problem with this approach is even if we are successful we would be putting the image back to cramfs which is read only which makes rooting this device useless since /system would be forced to be read only.

2. Move from cramfs to ext3. Currently we are stuck at find a way to modify both the system.img and boot.img. We have a way to dump everything in /system which makes modifying system.img less of a priority since we will have all the files. The only way to go to ext3 is to modify the boot files in the boot.img. This will be a true root solution since then /system will be writable once mounted.

3. This is the accept failure option. Rooting my not be possible so we may have to just install amazon marketplace or push apk files manually for some apps not available there.
[Android Q&A, Help & Troubleshooting] drob311:
I made some progress but not much... I got the img to mount... but when I open it, its empty... I'm starting to think this is a modified cramfs. I've got a buddy of mine working on this. He's a navy computer guy, worked with linux for years... awaiting his answer, but I'm gonna sit down right now and mess with this more. The 2 tabs from what I have read are damn near identical...
[Android Q&A, Help & Troubleshooting] rozzops:
Sounds awesome, I definitely would like to take a look at this.
[Android Q&A, Help & Troubleshooting] chidave09:
Rockchip Usb Drivers

I made a little tutorial that will be a little more useful once we can finally unpack this thing. It is instructions for installing the proper usb driver for the soc (RK2918) that powers this tablet. Also directions for flashing the partition of your choice. Also for you hardware enthusiasts here is a link to download the official data sheet for the soc. It has a ton of interesting info that anyone could enjoy. Shows you what this thing is really capable of if properly modified/unlocked.

Data Sheet

On with the tutorial!

You will need the following:

Drivers (windows only)

RK29 Update Tool

First things first MAKE SURE YOUR TABLET IS TURNED OFF and the USB is UNPLUGGED!!!!!!!!!

It is also recommended that you have at least half of your battery life remaining on the device.

And of course I am not responsible for any decisions you make whether they lead to bricking your device or pure profit!

DRIVER INSTALL

1) Unzip the archive with the drivers. Don't forget where you unzip to.

2) Press and hold down the "menu" button. While still holding menu, plug the usb cord from the computer into the tablet

3) Your pc will start looking for a driver automatically. It should fail to find any, if given the option, choose manual install.

4) If not given the option, you need to go to control panel > Device Manager

5) You should see an unknown devices in the list, right click on it

6) Choose "Update Driver Software..." and a new window will open.

7) Choose "Browse my computer for driver software" and another window will open

8) Browse to the folder you unzipped the drivers to. Select the appropriate folder for your operating system. EX. C:\PMID700\Drivers\64bit\win7

9) Make sure to check the box next to "Include subfolders"

10) Click the "Next" button and windows should successfully install your driver

RK29 Update Tool

1) Download the tool from link above and extract the .zip file and open it.

2) Double click the "RK29Update.exe". RKAndroidTool v1.29 will run

3) If you installed the driver correctly and still connected to the pc with device power off, the big bold message at the bottom should read "Found RKAndroid Loader Rock Usb." Success! Your device is attached and ready to be updated!

4) The Flash tab is where you want to be. From here you can choose exactly which Partition(s) you would like to update.

*CAUTION**CAUTION**CAUTION**CAUTION**CAUTION**CAUTION**CAUTION**CAUTION*

IF YOU CLICK THE "ERASEIDB" BUTTON YOU WILL ERASE ALL DATA ON INTERNAL MEMORY.

If you do this make sure you have a backup or something to flash, as you will not even be able to turn on your device if you don't. I personally found this out the hard way, luckily I did an rkdump of all device partitions and was able to use the "RK29xxLoader(L).bin" and "parameter" files included in the "RK29_Update_Tool" folder, as I did not have the originals or update.img.

*CAUTION**CAUTION**CAUTION**CAUTION**CAUTION**CAUTION**CAUTION**CAUTION*

Have fun and be careful
[Android Q&A, Help & Troubleshooting] fireproof34:
NO breakthroughs today, but i was thinking ( i know they do this with the MIUI rom for the OG droid and the Milestone) Could we find a Tab with similar hardware that has been rooted and modify it and then flash that to this tab? I know it would be risky and maybe no one is willing to give it a shot but if some one is willing i think it would be worth a shot?
[Android Q&A, Help & Troubleshooting] helirob:
Hey guys! I've read through the the thread and it sounds like you all have more knowledge about this than me, but I just thought I'd add that I got the Market to run, and get to the point where it says "Your item will be downloaded" but then I get a notification, "Download was unsuccessful, please try again." Is this because the Google Talk services are missing? Is it possible to install them without root? If I go to the market using the browser, I can start an install, and the market recognizes the device as the PTAB7200. I can click Install and it says "The app will be downloaded to your device shortly." but the download never starts.

---------- Post added at 02:30 PM ---------- Previous post was at 01:40 PM ----------

Also, something happens when you connect the USB to the computer, hold down the volume up key, and hit reset. Windows 7 device manager shows the PTAB7200 disk drives go away and an unknown device appears. The tablet goes in to a state where it seems to be locked up. Only hitting reset or unplugging the usb brings it back. Seems like it's waiting for something to happen on the PC side.
[Android Q&A, Help & Troubleshooting] rozzops:
Hey, I noticed this as well. I believe its because we need to upgrade the googleframeworkservices.apk (not sure if thats the exact name). I found many android market apks but none of them worked. I believe the market file you have on your tablet has the most potential for working but i believe it needs the googleframeworkservice.apk in the /system/app folder. And we cant add it because... drum roll... cramfs (i've come up with a better name for this fs though). :)

FireProof34,

Its not that bad of an idea to try to find something else with this same hardware. Possibly find something else with the same hardware that has a hacked rom available. I have 2 of the pmid700s so i could give it a shot if we find something comparable.

chidave09,

Thanks for the tutorial. I hope we can use this soon.
[Android Q&A, Help & Troubleshooting] drob311:
I'm hoping to finally get some time tonight and play with my ptab some more... my guess is that the archos tab is very similar to ours... I did notice that when I run a one click root that su is in xbin and busybox is in bin... I'm resetting back to stock and I'm gonna check but I'm assuming those files are not included in the stock "ROM"... if they aren't, and the system is read only, than how did those files get there?

Edit: nevermind... the files are there but the system won't allow for the permissions to be changed... this little guy is one tough son of a *****... back to the drawing board... I am gonna experiment and see if I can mount the system.img while its on the tabs flash nand... rozzo hit me up on gtalk if you're available tonight after 8pm... I have some wild ideas
[Android Q&A, Help & Troubleshooting] fireproof34:
Got this from a slate droid forum these guys have hacked cramfs.

http://www.slatedroid.com/topic/22162-writable-system-for-rk29xxt760p71-et/page__pid__235136
[Android Q&A, Help & Troubleshooting] chidave09:
I think that is the same mode as I described above, if so, the drivers I linked above should be the ones needed. Going to put the tab in that mode in a minute to check if it is the same

*update* it is the same mode I mentioned earlier. This is for flashing updates. Not sure if there is any other use for this mode or not
[Android Q&A, Help & Troubleshooting] sadsephiroth:
Working workaround for me for the market. Install gmail from amazon. Sync your google account and in account setting enable background and auto sync. I also ran setup wizard apk and installed vending apk. Don't remember where I got them. Then log into market from pc. PTAB7200 was listed and allow the first couple things I have tried to be pushed to tablet.
[Android Q&A, Help & Troubleshooting] chidave09:
Good News! ................... and some bad

I actually got system.img to mount in Ubuntu 11.10!! I know the window title says 11.04 in the screenshots, but I assure you it is .10, not that it matters. Problem is it says there is nothing on the mount point and a total of 0mb :mad:

Then I tried to view the properties on /temp and it says it is empty.

I decided to give this method a try with the boot.img, thinking convert to ext3? It is a no go, instead I get an error message.

Funny thing is, I can still see it (temp2) in the explorer pane!? So, I go into the folder where i set up the mount points but there is no temp2 folder, and continues to stay in the explorer bar until you do a umount or reboot. I then figured while I'm at why not try the kernel image? Same problem as boot image.

I am just curious as to why the system.img seems to work, but the is blank and the others work even less? Anyway I am going to do some more research, I figured this could be a step forward and had to share, Could some one please try this with their own system.img as I only have the one from the system partition as I was unable to get the update.img for some reason

*UPDATE*

To get a list of options to use with fusecram use this:

fusecram /path/to/system.img path/of/mountpoint -h

Looks like there could be some very useful things there, but honestly, I am very uneducated on this stuff.

If someone else could please take a look at this and try to make heads or tales of it, that would be much appreciated
[Android Q&A, Help & Troubleshooting] advcomp2019:
One thing that I see with the PMID700 tablets that I have is the time gets frozen or reset whenever the tablet gets locked. I am wondering if this is something with my two tablets or just these Polaroid tablets or all Android devices.
[Android Q&A, Help & Troubleshooting] chidave09:
trying something a little different. I went ahead and did

C:\Android_Tools\android-sdk\tools>adb pull /system E:\ptab7\system

put the output over to linux and tried this

dave@ubuntu:~$ mkcramfs /media/94CC-B1DF/system /home/dave/ptab7/system.img
Directory data: 17372 bytes
Everything: 91884 kilobytes
Super block: 76 bytes
CRC: 466221a1
warning: gids truncated to 8 bits (this may be a security concern)

So, ok I have no idea what this means. Decided to do a little check

dave@ubuntu:~$ fusecram /home/dave/ptab7/system.img /home/dave/ptab7/temp

The image mounts and I can see all the files. Awesome right? Not really, when i flash with the rktool it goes through fine and the tablet reboots, but it gets stuck at the blue "internet tablet screen"

I am running low on ideas, but not giving up just yet!!
[Android Q&A, Help & Troubleshooting] drob311:
http://wiki.archosfans.com/index.php?title=Dump_your_Home_Tablet_rom_and_create_a_custom_rom

Read this and halfway down it tells you how to root the rom... ill be tinkering here and there all weekend, but won't get to sit down and really go at it til Monday... I did try mounting to sdcard and flash nand, mounted but again nothing in it and read only... good to see some progress dave!
[Android Q&A, Help & Troubleshooting] chidave09:
just one problem though, i wasn't able to get the update.img. So unless I can get a copy of someone else's, I am just playing with the .imgs from different partitions. I really think I could get it if I had the update.img. Anyone willing to send me one from their tablet? PLEASE!!!!!!!!!
[Android Q&A, Help & Troubleshooting] retrolife1981:
got to change file systems permissions chmod root wheel rw x then you can overwrite the sys partition to install root or you can do it with terminal emulater on the tablet. You can bypass the market for now and install busybox and super user if you allow 3rd party apks to be installed and download busybox and super user from the browser and astro file manager ttheres also a market site in the browser you can use. You will need su binaries zip and extract it to the root of internal storage and copy su folder to root of internal storage and run a few commands in terminal from the tab and you should have root in like 5 minutes of total dl'ing and typing and installing
[Android Q&A, Help & Troubleshooting] chidave09:
can't change permission /system is cramfs which is read-only
[Android Q&A, Help & Troubleshooting] retrolife1981:
Follow this guide and if it don't work lemme know

http://www.acertabletforum.com/foru...ssion/1167-rooting-iconia-a100-made-easy.html
[Android Q&A, Help & Troubleshooting] chidave09:
I will give it a shot, but I will tell you right now, don't think it will allow

mount -o remount,rw /system

About to try in a minute anyway, I'll keep thread posted
[Android Q&A, Help & Troubleshooting] chidave09:
Thanks for the suggestion, but sadly it did not work, as I do not have cmdclient in /system/bin or anywhere else that I can see either. I kinda see how that could work if we knew the proper file to interact with on our system.

$ /system/bin/cmdclient ec_micswitch '`mount -o remount,rw /system`'
/system/bin/cmdclient: not found

Didn't even make it to the part I thought would break it! lol Gonna do more research on this method though. Thanks again retro
[Android Q&A, Help & Troubleshooting] sadsephiroth:
Would this work? hxxp://southerntelecom.com/polaroidsupport/firmware/

replace xx with tt
[Android Q&A, Help & Troubleshooting] retrolife1981:
upload your firmware zip I'll look through it
[Android Q&A, Help & Troubleshooting] drob311:
Su is already in xbin and busybox is already in bin, came like that straight out of the box...

http://www.sendspace.com/file/bew46b ... this is the ptab7200... let me know if you need anymore files... gtalk me drob311420 @ gmail.com
[Android Q&A, Help & Troubleshooting] retrolife1981:
so has anyone tried installing super user apk?
[Android Q&A, Help & Troubleshooting] rozzops:
Yes, we have tried installing the super user apk.

Thanks for your advice but unfortunately we are dealing with a cramfs (compressed read only file system) which is non-standard so we are having difficulties opening up the unpacked updated.img.

As noted above, the latest update.img can be found here: http://southerntelecom.com/polaroidsupport/firmware/
[Android Q&A, Help & Troubleshooting] chidave09:
Thanks for the firmware link. When I was on the main support page least week it said there were no updates. Now it is 2.4 and I am on 2.2. Time to get to work on this!
[Android Q&A, Help & Troubleshooting] dennyik74:
update img

so please forgive me im such a noob its not funny but i have acquired a 2.4 firmware upgrade file for this tablet is this useful at all to change anything for rooting
[Android Q&A, Help & Troubleshooting] fireproof34:
I think that is the Hope!
[Android Q&A, Help & Troubleshooting] Dmoneh:
Just e-mailed the tablet producers to ask for an SDK. My guess is that they won't respond, but still worth a shot.

PS: Thanks to the person that released the 2.4 upgrade. Even though Android Market still closes when I open it, it now recognizes my tablet as a Polaroid. PMID 700 and says that all the apps I tried installing online should work on it (which of course it doesn't because the market still closes).
[Android Q&A, Help & Troubleshooting] chidave09:
[QOUTE=rozzops;19795088]So i moved the update.img to my linux box and tried to mount it but i get:

rozzo@ubuntu:~/Documents/rooting$ sudo mount -t cramfs -o loop update.img update
mount: wrong fs type, bad option, bad superblock on /dev/loop0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

[/QOUTE]

I think I may have found out why this isn't working. Turns out Linux Kernel 3.0.0 (Ubuntu 11.10) doesn't have cramfs turned on all the way. I just taught myself how to download, configure, and compile the source to add full support. Turns out it is pretty easy it is just taking forever to build!! Anyway, hopefully with this I will be able to mount boot.img so we can customize to allow ext3 system partition
[Android Q&A, Help & Troubleshooting] james92683:
I hope it works and thank u all for trying so hard
[Android Q&A, Help & Troubleshooting] rozzops:
Hey, were you able to figure anything out with this? I have some time tonight i plan on taking a look at this again.

I have been away for the past few days due to redoing the head gaskets on my gfs car. Hopefully i will be able to get this figured out before she wrecks it again :).
[Android Q&A, Help & Troubleshooting] rozzops:
I updated to the 2.4 firmware and it seems that the screen is much better. Not sure why the firmware update would fix that but has anyone else noticed this?

No update on getting this thing rooted.
[Android Q&A, Help & Troubleshooting] chidave09:
Well, I am pretty sure they used a custom cramfs and we will not be able to extract it with their tool. I have been trying a few different plug-INS, but none have worked. Gonna keep trying different things, but it isn't looking very promising
[Android Q&A, Help & Troubleshooting] ParrotSquawk:
Why I want root!

I want to add a calendar function to this device but I can't get calendar.apk to run properly (it probably needs a root install as does vending, which also breaks down)

I think that once root is obtained and gapps are added to this device it will be a sweet treat for under $80 which is what it appears most of us paid for it.
[Android Q&A, Help & Troubleshooting] chidave09:
So, this post is the exact problem we are having with our system.img and it is based off the same s.o.c.

http://www.slatedroid.com/topic/19808-rk29xx-imagetools-v21/page__view__findpost__p__271348

This seems to be a really rough one, I think we need a special cramfs driver, just don't know where to get it

Problem with boot.img -

Using split_image I get

./split_bootimg.pl boot.img
Android Magic not found in boot.img. Giving up.

Using unpack-bootimg -

./unpack-bootimg.pl boot.img Could not find any embedded ramdisk images. Are you sure this is a full boot image?